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      <time title="创建时间：2021-12-26 23:27:21 / 修改时间：23:27:33" itemprop="dateCreated datePublished" datetime="2021-12-26T23:27:21+08:00">2021-12-26</time>
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<p>本文主要在sdu-pta项目中如何使用 jsch 去连接 FTP服务器，并访问、下载、上传文件。</p>
</blockquote>
<h1 id="Maven依赖"><a href="#Maven依赖" class="headerlink" title="Maven依赖"></a>Maven依赖</h1><figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="tag">&lt;<span class="name">dependency</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">groupId</span>&gt;</span>com.jcraft<span class="tag">&lt;/<span class="name">groupId</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">artifactId</span>&gt;</span>jsch<span class="tag">&lt;/<span class="name">artifactId</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">version</span>&gt;</span>0.1.55<span class="tag">&lt;/<span class="name">version</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;/<span class="name">dependency</span>&gt;</span></span><br></pre></td></tr></table></figure>


<h1 id="使用说明"><a href="#使用说明" class="headerlink" title="使用说明"></a>使用说明</h1><figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 获取Channel</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="keyword">public</span> ChannelSftp <span class="title function_">getSftp</span><span class="params">()</span> <span class="keyword">throws</span> SftpException &#123;</span><br><span class="line">    Session session;</span><br><span class="line">    <span class="keyword">try</span> &#123;</span><br><span class="line">        session = <span class="keyword">new</span> <span class="title class_">JSch</span>().getSession(sshProperties.getUsername(), sshProperties.getHost(), sshProperties.getPort());</span><br><span class="line">        session.setConfig(<span class="string">&quot;StrictHostKeyChecking&quot;</span>, <span class="string">&quot;no&quot;</span>);</span><br><span class="line">        session.setPassword(sshProperties.getPassword());</span><br><span class="line">        session.connect();</span><br><span class="line">    &#125; <span class="keyword">catch</span> (JSchException e) &#123;</span><br><span class="line">        log.error(<span class="string">&quot;ssh connecting &quot;</span> + sshProperties.getUsername() + <span class="string">&quot;@&quot;</span> + sshProperties.getHost() + <span class="string">&quot; failed.&quot;</span>, e);</span><br><span class="line">        <span class="keyword">throw</span> <span class="keyword">new</span> <span class="title class_">SftpException</span>();</span><br><span class="line">    &#125;</span><br><span class="line">    ChannelSftp sftp;</span><br><span class="line">    <span class="keyword">try</span> &#123;</span><br><span class="line">        sftp = (ChannelSftp) session.openChannel(<span class="string">&quot;sftp&quot;</span>);</span><br><span class="line">        sftp.connect();</span><br><span class="line">    &#125; <span class="keyword">catch</span> (JSchException e) &#123;</span><br><span class="line">        log.error(<span class="string">&quot;channel opens fail&quot;</span>, e);</span><br><span class="line">        <span class="keyword">throw</span> <span class="keyword">new</span> <span class="title class_">SftpException</span>();</span><br><span class="line">    &#125;</span><br><span class="line">    <span class="keyword">return</span> sftp;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="comment">// 使用配置类获取操作句柄</span></span><br><span class="line"><span class="type">ChannelSftp</span> <span class="variable">sftp</span> <span class="operator">=</span> sshConfiguration.getSftp();</span><br><span class="line"><span class="comment">// 使用后关闭连接</span></span><br><span class="line">    <span class="keyword">try</span> &#123;</span><br><span class="line">        <span class="comment">// 文件的各种操作 </span></span><br><span class="line">    &#125; <span class="keyword">catch</span> (com.jcraft.jsch.SftpException e) &#123;</span><br><span class="line">        <span class="keyword">throw</span> <span class="keyword">new</span> <span class="title class_">SftpException</span>(e.getMessage());</span><br><span class="line">    &#125; <span class="keyword">finally</span> &#123;</span><br><span class="line">        <span class="comment">// 注意这里的连接关闭</span></span><br><span class="line">        sftp.disconnect();</span><br><span class="line">        <span class="keyword">try</span> &#123;</span><br><span class="line">            sftp.getSession().disconnect();</span><br><span class="line">        &#125; <span class="keyword">catch</span> (JSchException e) &#123;</span><br><span class="line">            log.error(<span class="string">&quot;sftp fails to channel get session&quot;</span>);</span><br><span class="line">        &#125;</span><br><span class="line">    &#125;</span><br></pre></td></tr></table></figure>


<h1 id="实战演练"><a href="#实战演练" class="headerlink" title="实战演练"></a>实战演练</h1><h2 id="配置类"><a href="#配置类" class="headerlink" title="配置类"></a>配置类</h2><figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">package</span> com.sduoj.judgeserver.conf;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> com.jcraft.jsch.*;</span><br><span class="line"><span class="keyword">import</span> com.sduoj.judgeserver.exception.internal.SftpException;</span><br><span class="line"><span class="keyword">import</span> lombok.Getter;</span><br><span class="line"><span class="keyword">import</span> lombok.extern.slf4j.Slf4j;</span><br><span class="line"><span class="keyword">import</span> org.springframework.beans.factory.annotation.Autowired;</span><br><span class="line"><span class="keyword">import</span> org.springframework.context.annotation.Configuration;</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@Author</span>: Song yang Ji</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@ProjectName</span>: sduoj-judge-server</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@Version</span> 1.0</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@Description</span>: SFTP的配置信息类</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"></span><br><span class="line"></span><br><span class="line"><span class="meta">@Configuration</span></span><br><span class="line"><span class="meta">@Slf4j(topic = &quot;SFTP&quot;)</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">SshConfiguration</span> &#123;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@Getter</span></span><br><span class="line">    SshProperties sshProperties;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@Autowired</span></span><br><span class="line">    <span class="keyword">public</span> <span class="title function_">SshConfiguration</span><span class="params">(SshProperties sshProperties)</span> &#123;</span><br><span class="line">        <span class="built_in">this</span>.sshProperties = sshProperties;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="keyword">public</span> ChannelSftp <span class="title function_">getSftp</span><span class="params">()</span> <span class="keyword">throws</span> SftpException &#123;</span><br><span class="line">        Session session;</span><br><span class="line">        <span class="keyword">try</span> &#123;</span><br><span class="line">            session = <span class="keyword">new</span> <span class="title class_">JSch</span>().getSession(sshProperties.getUsername(), sshProperties.getHost(), sshProperties.getPort());</span><br><span class="line">            session.setConfig(<span class="string">&quot;StrictHostKeyChecking&quot;</span>, <span class="string">&quot;no&quot;</span>);</span><br><span class="line">            session.setPassword(sshProperties.getPassword());</span><br><span class="line">            session.connect();</span><br><span class="line">        &#125; <span class="keyword">catch</span> (JSchException e) &#123;</span><br><span class="line">            log.error(<span class="string">&quot;ssh connecting &quot;</span> + sshProperties.getUsername() + <span class="string">&quot;@&quot;</span> + sshProperties.getHost() + <span class="string">&quot; failed.&quot;</span>, e);</span><br><span class="line">            <span class="keyword">throw</span> <span class="keyword">new</span> <span class="title class_">SftpException</span>();</span><br><span class="line">        &#125;</span><br><span class="line">        ChannelSftp sftp;</span><br><span class="line">        <span class="keyword">try</span> &#123;</span><br><span class="line">            sftp = (ChannelSftp) session.openChannel(<span class="string">&quot;sftp&quot;</span>);</span><br><span class="line">            sftp.connect();</span><br><span class="line">        &#125; <span class="keyword">catch</span> (JSchException e) &#123;</span><br><span class="line">            log.error(<span class="string">&quot;channel opens fail&quot;</span>, e);</span><br><span class="line">            <span class="keyword">throw</span> <span class="keyword">new</span> <span class="title class_">SftpException</span>();</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="keyword">return</span> sftp;</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<h2 id="工具类"><a href="#工具类" class="headerlink" title="工具类"></a>工具类</h2><p>接口类</p>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">package</span> com.sduoj.judgeserver.util.sftp;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> java.nio.file.Path;</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@Author</span>: Song yang Ji</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@ProjectName</span>: sduoj-judge-server</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@Version</span> 1.0</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@Description</span>:</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">interface</span> <span class="title class_">SftpFilesService</span> &#123;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> problemID 题目ID</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> local     下载的本地的路径</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@throws</span> SftpException Sftp 异常</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="keyword">void</span> <span class="title function_">downloadProblemIOFiles</span><span class="params">(String problemID, Path local)</span> <span class="keyword">throws</span> SftpException;</span><br><span class="line"></span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     *</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> problemID 题目ID</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> testPointID 测试点ID</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> local 下载的本地的路径</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@throws</span> SftpException Sftp 异常</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="keyword">void</span> <span class="title function_">downloadProblemTestPointIOFiles</span><span class="params">(String problemID, String testPointID, Path local)</span> <span class="keyword">throws</span> SftpException;</span><br><span class="line"></span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>


<p>实现类</p>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br><span class="line">83</span><br><span class="line">84</span><br><span class="line">85</span><br><span class="line">86</span><br><span class="line">87</span><br><span class="line">88</span><br><span class="line">89</span><br><span class="line">90</span><br><span class="line">91</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta">@Service(&quot;sftpFilesService&quot;)</span></span><br><span class="line"><span class="meta">@Slf4j(topic = &quot;SFTP&quot;)</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">SftpFilesServiceImpl</span> <span class="keyword">implements</span> <span class="title class_">SftpFilesService</span> &#123;</span><br><span class="line"></span><br><span class="line">    EnvironmentConfig environmentConfig;</span><br><span class="line"></span><br><span class="line">    SshConfiguration sshConfiguration;</span><br><span class="line"></span><br><span class="line"></span><br><span class="line">    <span class="meta">@Autowired</span></span><br><span class="line">    <span class="keyword">public</span> <span class="title function_">SftpFilesServiceImpl</span><span class="params">(EnvironmentConfig environmentConfig, SshConfiguration sshConfiguration)</span> &#123;</span><br><span class="line">        <span class="built_in">this</span>.environmentConfig = environmentConfig;</span><br><span class="line">        <span class="built_in">this</span>.sshConfiguration = sshConfiguration;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> problemID 题目ID</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> local     下载的本地的路径</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@throws</span> SftpException Sftp 异常</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="meta">@Override</span></span><br><span class="line">    <span class="keyword">public</span> <span class="keyword">void</span> <span class="title function_">downloadProblemIOFiles</span><span class="params">(String problemID, Path local)</span> <span class="keyword">throws</span> SftpException &#123;</span><br><span class="line">        <span class="comment">// 创建本地文件夹</span></span><br><span class="line">        <span class="keyword">try</span> &#123;</span><br><span class="line">            Files.createDirectory(local);</span><br><span class="line">        &#125; <span class="keyword">catch</span> (IOException e) &#123;</span><br><span class="line">            <span class="keyword">throw</span> <span class="keyword">new</span> <span class="title class_">SftpException</span>(<span class="string">&quot;本地文件夹创建失败&quot;</span>);</span><br><span class="line">        &#125;</span><br><span class="line"></span><br><span class="line">        <span class="type">String</span> <span class="variable">remoteProblemFiles</span> <span class="operator">=</span> sshConfiguration.getSshProperties().getRootDir() + problemID + <span class="string">&quot;/&quot;</span>;</span><br><span class="line">        <span class="type">ChannelSftp</span> <span class="variable">sftp</span> <span class="operator">=</span> sshConfiguration.getSftp();</span><br><span class="line">        <span class="keyword">try</span> &#123;</span><br><span class="line">            List&lt;String&gt; list = listFileNamesInDir(sftp, remoteProblemFiles);</span><br><span class="line">            <span class="keyword">for</span> (String filePath : list) &#123;</span><br><span class="line">                sftp.get(filePath, local.toString());</span><br><span class="line">            &#125;</span><br><span class="line">        &#125; <span class="keyword">catch</span> (com.jcraft.jsch.SftpException e) &#123;</span><br><span class="line"></span><br><span class="line">            <span class="keyword">throw</span> <span class="keyword">new</span> <span class="title class_">SftpException</span>(e.getMessage());</span><br><span class="line">        &#125; <span class="keyword">finally</span> &#123;</span><br><span class="line">            <span class="comment">// 注意这里的连接关闭</span></span><br><span class="line">            sftp.disconnect();</span><br><span class="line">            <span class="keyword">try</span> &#123;</span><br><span class="line">                sftp.getSession().disconnect();</span><br><span class="line">            &#125; <span class="keyword">catch</span> (JSchException e) &#123;</span><br><span class="line">                log.error(<span class="string">&quot;sftp fails to channel get session&quot;</span>);</span><br><span class="line">            &#125;</span><br><span class="line">        &#125;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> problemID   题目ID</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> testPointID 测试点ID</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@param</span> local       下载的本地的路径</span></span><br><span class="line"><span class="comment">     * <span class="doctag">@throws</span> SftpException Sftp 异常</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">    <span class="meta">@Override</span></span><br><span class="line">    <span class="keyword">public</span> <span class="keyword">void</span> <span class="title function_">downloadProblemTestPointIOFiles</span><span class="params">(String problemID, String testPointID, Path local)</span> <span class="keyword">throws</span> SftpException &#123;</span><br><span class="line">        <span class="type">String</span> <span class="variable">remoteProblemFiles</span> <span class="operator">=</span> sshConfiguration.getSshProperties().getRootDir() + problemID + <span class="string">&quot;/&quot;</span> + testPointID + <span class="string">&quot;/&quot;</span>;</span><br><span class="line">        <span class="type">ChannelSftp</span> <span class="variable">sftp</span> <span class="operator">=</span> sshConfiguration.getSftp();</span><br><span class="line">        <span class="keyword">try</span> &#123;</span><br><span class="line">            List&lt;String&gt; list = listFileNamesInDir(sftp, remoteProblemFiles);</span><br><span class="line">            <span class="keyword">for</span> (String filePath : list) &#123;</span><br><span class="line">                sftp.get(filePath, local.toString());</span><br><span class="line">            &#125;</span><br><span class="line">        &#125; <span class="keyword">catch</span> (com.jcraft.jsch.SftpException e) &#123;</span><br><span class="line"></span><br><span class="line">            <span class="keyword">throw</span> <span class="keyword">new</span> <span class="title class_">SftpException</span>(e.getMessage());</span><br><span class="line">        &#125; <span class="keyword">finally</span> &#123;</span><br><span class="line">            <span class="comment">// 注意这里的连接关闭</span></span><br><span class="line">            sftp.disconnect();</span><br><span class="line">            <span class="keyword">try</span> &#123;</span><br><span class="line">                sftp.getSession().disconnect();</span><br><span class="line">            &#125; <span class="keyword">catch</span> (JSchException e) &#123;</span><br><span class="line">                log.error(<span class="string">&quot;sftp fails to channel get session&quot;</span>);</span><br><span class="line">            &#125;</span><br><span class="line">        &#125;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="keyword">private</span> List&lt;String&gt; <span class="title function_">listFileNamesInDir</span><span class="params">(ChannelSftp sftp, String remoteDir)</span> <span class="keyword">throws</span> com.jcraft.jsch.SftpException &#123;</span><br><span class="line">        List&lt;String&gt; list = <span class="keyword">new</span> <span class="title class_">ArrayList</span>&lt;&gt;();</span><br><span class="line">        Vector&lt;ChannelSftp.LsEntry&gt; ls = sftp.ls(remoteDir);</span><br><span class="line">        <span class="keyword">for</span> (ChannelSftp.LsEntry file : ls) &#123;</span><br><span class="line">            <span class="type">String</span> <span class="variable">filename</span> <span class="operator">=</span> file.getFilename();</span><br><span class="line">            <span class="keyword">if</span> (filename.equals(<span class="string">&quot;.&quot;</span>) || filename.equals(<span class="string">&quot;..&quot;</span>)) <span class="keyword">continue</span>;</span><br><span class="line">            list.add(remoteDir + filename);</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="keyword">return</span> list;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

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